Which are the best emulators?

Hello, I'm a newbie here so i really don't know what the best emulators are for the DS. I've done a bit of searching and discovered that Picodrive is the best Genesis emulator and DSMasterPlus is the best SMS emulator, but what about the other systems?

Also, in the forums over at xbox-scene.com there is a sticky at the top that describes all the current best emulators and their versions. Might it not be a good idea to apply the same concept here?

Thanking you in advance for any input.

SNES - SNEmulDS

NES - nesds

For the Genesis, many people actually consider jEnesisDS to be better. It uses a hardware renderer to bring you fullspeed emulation at the cost of possible graphical glitches. More info at http://wiki.pocketheaven.com/jEnesisDS

NES - NES DS
SNES - SNEmulDS
GBC - Lameboy, also Goomba Color if you can run GBA files
TI-83+ - WabbitDS